Details filter out about what happened with Windows 10 Mobile build 14998

Early this morning, under the guise of a “Localization for English" update, some Windows 10 Insiders in the Fast Ring were instead surprised to find that their phones were installing a new build, version 14998. While Windows 10 Insider build 15002 for PCs had launched two days prior, there was no mention of a mobile build (although it had been well over a month), no blog post, and nothing to suggest that this was all supposed to be happening.A few hours later, chief Windows Insider Dona Sarkar tweeted out that they were “investigating," and our request for more information from Microsoft came back with the mother of all boilerplate PR responses, but still nothing concrete about what happened.Since then, however, Sarkar has been responding to questions about the debacle on Twitter: